Ropivacaine Concentration and Rebound Pain

The goal of this clinical trial is to see if the concentration of a local anesthetic (ropivacaine) in peripheral nerve block is related to the severness of pain after surgery of distal radius fractures in adults. The main questions it aims to answer are: * Is concentration of ropivacaine related to severeness, duration and type of postoperative pain? * Is concentration of ropivacaine related to analgetic consumption after surgery? * Is concentration of ropivacaine related to block sucess rate during surgery and patient satisfaction after surgery? Researchers will compare ropivacaine 3.75 mg/ml and 7.5 mg/ml used in brachial plexus peripheral nerve block. Participipants are randomized to one of the two concentrations. The peripheral nerve block is standard anesthetic treatment for distal radius fractures scheduled for volar plate surgery at Oslo University Hospital. All other treatment for the condition will be the same as standard treatment. Participants will answer a questionnaire regarding pain, physical function, medication and life quality at different points of time after surgery, up to 6 weeks after surgery.

NCT Number	NCT06950372
Lead Sponsor	Oslo University Hospital Collaborators: University of Oslo
Conditions	Radius Fracture Distal, Rebound Pain
Enrollment	80 participants
Start Date	2025-02-14
Primary Completion	2026-04-08 (estimated)
Study Completion	2026-04-08 (estimated)
Updated on ClinicalTrials.gov	2026-04-20